Ryan Calsbeek

Academic Appointments

Associate Professor of Biological Sciences
Associate Professor, Ecology, Evolution, Environment and Society Graduate Program

Males and females share the majority of their genetic material but are often subject to very different forms of selection. This poses special challenges for understanding evolutionary change. Our work on sexual conflict is aimed at understanding the implications for local adaptation and how conflict is resolved. Broadening our work on sexual conflict from the previous decade, we are now also investigating the ways in which selection operates differentially on alternative life history stages. Using wood frogs as a study system, we’re investigating the special challenges that arise when selection has to build two very different body plans in the same individual (e.g., tadpoles and frogs). We combine this work with a study of the unique challenges faced by frogs that have to breed in human altered habitats.

338 Life Sciences Center
HB 6044
Biological Sciences
B.S. Indiana University
Ph.D. University of California at Santa Cruz

Selected Publications

Calsbeek, R. and Careau V. 2019 Survival of the fastest: tradeoffs structure the multivariate optimization of performance phenotypes. Medicine and Science in Sports and Exercise

Logan, M.L., Duryea, M.C., Molnar, O.R.,  Kessler, B., and Calsbeek, R. Spatial variation in climate mediates gene flow across an island archipelago. Evolution  10: 2395-2403

Calsbeek, R., Duryea, M.C., Goedert, D., Bergeron, P., and Cox, R.M. 2015 Intralocus sexual conflict, adaptive sex allocation, and the heritability of fitness. Journal of Evolutionary Biology 28: 1975-1985.

Calsbeek, R., and Kuchta S.R. 2011 Predator mediated selection and impact of developmental stage on viability in wood frog tadpoles (Rana sylvatica). BMC Evolutionary Biology 11: 353-364.

Calsbeek, R., and Cox, R.M. 2010 Experimentally assessing the relative importance of predation and competition as agents of natural selection. Nature 465: 613-616.